The best part of roasting a bird or prime rib has got to be the pan drippings. This fat separator allows you to capture all the delicious flavor bits while separating out the unwanted grease. Pour the pan drippings into the strainer, which will catch any unwanted bits, and the good stuff will fill the base of the separator, where the fat will float to the top. The simply pour and the juices will flow from the bottom of the separator, allowing for a delicious, light gravy to be made.